15665 leans Republican by roughly 24 points: about 38% of voters vote Democratic and 62% Republican.
About more than 99% of adults in 15665 typically vote, above the U.S. average of about 62%. Among adults in 15665, ~42% vote Democratic, ~68% Republican, and ~-10% don't vote. The map below shows estimated turnout by block group.
How 15665 compares
Among zip codes within 15 miles, 15665 leans more Republican than 35 of 79 neighbors.
15665 runs about 23 points more Republican than Pennsylvania as a whole.
Politics vary noticeably by block within 15665. The southeast side is the most Republican-leaning (R+33) and the northwest side is the least Republican-leaning (R+21), a spread of about 12 points.
Why 15665 leans the way it does
This analysis examined 14,881 data points per zip code to find what predicts political lean and turnout. The items below are a few correlations that stood out for 15665, not a ranked or complete list of what matters most.
Areas with many family households vote Republican. About 81% of households in 15665 are family households, about 14 points above the U.S. average of 67%.
High-school completion and voter turnout
Places with high-school-completion-heavy adults tend to turn out at a higher rate; 15665, PA sits in the top tenth nationally on this measure.
Why turnout in 15665 looks the way it does
Areas with strong routine healthcare access turn out at higher rates. 15665 is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 71%, about 11 points above the U.S. average of 60%. Homeowners vote more often than renters, and about 89% of households in 15665 own their home, above 84% of zip codes. High high-school completion lines up with higher turnout, and about 99% of adults in 15665 have completed high school, above 97% of zip codes. Learn more about the findings and methodology on the political spectrum map.
Nearby Zip Codes
Zip Codes with Similar Populations
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.